baber/WOPTO huggingface dataset:
Patent GB-1209071-A (GB)
Title: A character recognition system
IPC: G06V10/24
Filed: 1968-03-01
Abstract: 1,209,071. Character recognition. BURROUGHS CORP. 1 March, 1968 [3 March, 1967], No. 10114/68. Heading G4R. In. a character recognition system, the character is scanned a plurality of times in sequence to produce video signals which are gated to recognition logic during a selected portion of each scan according to the character position. A flying-spot scanner 10 performs a series of upwards vertical scans (each of 30 bit-times) on each character. A flip-flop 32 is set by black in any scan, a line 33 from read counter 11 resetting flip-flop 32 after transferring its contents to flip-flop 36 at the end of each scan. A limit counter 31 counts black scans (line 54) and is zeroed via AND 37 by a black scan following an all-white scan or via AND 40 by itself at a count of 11. A print edge detector 12 has 14 flip-flops for the 14 lowest bit positions of a scan respectively, input gates to the flip-flops being enabled in turn by the read counter 11 during each scan to permit any black bit from the scanner 10 to set its corresponding flip-flop. Logic produces a binary code giving the position which is two bit positions lower than the lowest pair of adjacent set flip-flops so that after the whole character has been scanned this code will give the position two bit positions below the bottom edge of the character. This code is gated into window encoder register 20 and the 14 flip-flops are reset, by AND 42 when an all-white scan follows at least five black scans or by AND 44 on the 10th successive black scan. The contents of the window encoder register 20 are passed into window address register 22 when either of delay line counters 46, 47 reaches a count of 11. These counters count the scans (line 33). The pulses on line 51 (which zero the limit counter 31) zero the two counters 46, 47 alternately and reverse flip-flop 48 which selects which counter is to be zeroed. During each scan, window counter 18 counts the bit-times. When the count equals the contents of window address register 22, comparator 24 zeroes the window counter 18 and sets flip-flop 27. When the window counter 18 next reaches a count of 19 it resets flip-flop 27. While set, flip-flop 27 enables AND 17 to pass the scanner signals, delayed in a 2-character magnetostrictive delay line 16, to recognition logic 60. Thus the recognition logic 60 receives only the signals in a 20-bit-high window the bottom of which is specified by the code in the window address register 22. The window extends 2 bit-positions below the bottom of the character and normally 2 bit-positions above the top of it. Shift registers in the recognition logic 60 are also controlled by the flip-flop 27. Vertical positioning in the scanner may be corrected if necessary, in accordance with the code from the print edge detector 12 or window encoder register 20, after each all-white scan. Character height normalization may precede the application of the window to the data. The window may be chosen relative to its upper rather than lower edge as above.
Patent GB-893709-A (GB)
Title: Method for the purification of hexamethylenediamine
Filed: 1960-03-22
Abstract: In purifying hexamethylene diamine by a continuous process wherein hexamethylene diamine is distilled, the vapours are condensed and part of the condensate is returned as reflux to the distillation zone, the whole or a part of the condensed product which is to be returned to the distillation zone is first held for at least 15 minutes at a temperature between the melting point and the boiling point of hexamethylene diamine, e.g. at 90-110 DEG  C., whereby certain low-boiling impurities in the product are converted into high-boiling impurities and the purity of the final product is improved.  The process may be applied to hexamethylene diamine obtained by the catalytic hydrogenation of adiponitrile.
Patent GB-588827-A (GB)
Title: Elliptical cone-shaped reproducing diaphragm
IPC: H04R7/20
Filed: 1944-05-25
Abstract: 588,827. Diaphragms. MAGNAVOX CO., O'CONNOR, R. A., and QUINNELL, L. E. May 25, 1944, No. 10176. [Class 40 (iv)] A conical diaphragm of elliptical cross-section for a moving-coil load-speaker comprises a surround F curved in opposite directions to form a plurality of corrugations C and wherein the distances between the apex of and the valley between successive curved portions successively decrease in the outward direction from the conical portion B. As shown, the corrugations C, which are of decreasing radius outwardly from the portion B, and the intermediate curved portion extend between two planes parallel to the base of the diaphragm and separated by a distance preferably greater than two per cent of the length of the minor axis at the base of the cone. The ratio of the major and minor axes at the base of the conical portion B should be between 1.5 and 1.7 to 1 and the apical angles in the principal planes through the major and minor axes should be between 125 and 135 degrees and between 95 and 105 degrees respectively. Detailed dimensions of a diaphragm are included in the Specification and are indicated on the drawing.
Patent GB-150019-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M19/10
Filed: 1919-04-23
Abstract: 150,019. Smith, W. S., Salmon, P., and Ellor, J. E. April 23, 1919. Spray carburettors.-Consists in forming the carburettor of two or more nested Venturi tubes, the outer ones being connected to the induction pipe and the inner one having a jet at the throat through which fuel is drawn by the engine section from a reservoir in which the fuel level is below the jet, the usual float chamber being dispensed with. The carburettor shown in Figs. 1 and 4 is suitable for aircraft engines, where the suction lift or negative head of fuel varies owing to the aircraft tilting or to the consumption of petrol. The outer Venturi tube 13 is provided at one end with the usual throttle valve 18 and at the other end with a primary air valve 19 of the Iris type, these valves being simultaneously operated by the lever 20. The inner Venturi tube 15 has its outlet at the throat 17 of the outer Venturi tube, and at the throat of the inner Venturi tube is provided an annular fuel jet controlled by a lever 24, the jet being supplied by pipes 25 leading to a petrol tank 56 through a passage 30 controlled by a needle valve 26. This valve is connected to one side of a diaphragm 27, the other side of which is not only connected by a pipe 31 to an opening 32 at the entrance to the inner Venturi tube, but is also acted upon by a tension spring 33 and dash pot 34. The valve 26 is thus influenced by the difference of pressure existing at two different points of the inner Venturi tube, the flow of petrol being kept constant when the suction lift varies.
Patent GB-416367-A (GB)
Title: Improvements in or relating to means for automatically maintaining position of conveyor belts
IPC: B65G39/16
Filed: 1934-04-04
Abstract: 416,367. Conveyers. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.- (Robins Conveying Belt Co. ; Meade Avenue, Passaic, New Jersey, U.S.A.) April 4, 1934, No. 10229. [Class 78 (i).] An idler unit for correcting deviation of a conveyer belt B comprises a series of troughing rollers 5, 6 independently-rotatable on a pivoted frame 8, and brake mechanisms 21 adapted to act on the outer idler rollers 6, each brake mechanism including a freely-rotatable roll 24 independent of the adjacent idler and located at one end thereof in the path of the adjacent edge of a laterally-shifted belt supported on the idler unit. In the construction shown the frame 8 turns with some friction on a vertical pivot 11 on the support 10, and the brake pads 21 are carried by bent levers 19 pivoted at 18 to the frame 8, the rolls 24 being pivoted on the upper arms of the levers. Thus, when the belt moves laterally and abuts against a roll 24, the corresponding brake 21 is applied to its idler 6 and the frame 8 turns about the pivot 11 so that the belt moves back to the central position. The pivot 11 is in the same vertical plane as the axes of the idler rollers, so that the belt may be run in either direction. A friction washer 17 of leather or other material is inserted between the frame 8 and the support 10 and prevents the frame swinging too freely. The idlers rotate on shafts 7 mounted in the frame 8.
Patent GB-1430915-A (GB)
Title: Take-off grippers in printing presses
IPC: B65H29/08
Filed: 1974-03-07
Abstract: 1430915 Delivering sheets ROLAND OFFSETMASCHINENFABRIK FABER & SCHLEICHER AG 7 March 1974 [9 March 1973] 10294/74 Heading B8R A gripper which, in normal operation, moves in a closed path between a position over a sheet stack and a position remote from the stack, and which, while over the stack, grips a sheet delivered from a printing-machine and deposits it on the stack, is, in the event of sheet jamming or entanglement and while the machine is still running, held in its position remote from the stack by a locking mechanism which prevents the horizontal component of the gripper drive motion from being transmitted to the gripper to move it back to its position over the stack, which component is directed in the opposite direction to the delivery movement of the sheets. The vertical component is provided by a cam 16, Fig. 1, and the horizontal component by a camoperated reciprocating drive rod 1, Figs. 1 and 2, and a spring 6. The movement of the rod 1 by the spring 6 to move the gripper towards the stack 5 is prevented by a locking pawl 8 when the latter is swung about its pivot 10 into the path of a projection 7 on the rod 1 on energization of an electromagnet 12 by closing a switch 15. If this occurs when the projection 7 is to the left of the pawl 8, the resultant swinging movement of the pawl 8 when hit by the projection as the gripper moves away from the stack is taken up by a spring 19 to prevent damage to the magnet. The pawl may alternatively be moved pneumatically or manually.
Patent GB-102129-A (GB)
Title: Improvements in Box Covering Machines.
Inventor: NASMITH JOHN WILLIAM
IPC: B31B15/00
Filed: 1916-07-24
Abstract: 102,129. Nasmith, J. W. July 24, 1916. Machines for covering boxes. Relates to a machine of the kind described in Specifications 11282/10, 28857/10, and 29085/10. The table 3 of the machine receives the box 2 in its inverted position, and the turning-in of the covering-band is effected by four pairs of rollers, one pair 7, 8 being shown. The upper roller of each pair reciprocates to press the band on to the bottom of the box and the box on to the table, while the lower roller moves under the corresponding box side or end and up the inner face thereof. The rollers 7, 8 are carried by arms pivoted to brackets adjustable on bars 12, 16, and are spring-pressed towards the corresponding member 21 of the usual expanding frame. The bars 12, 16 are carried by an upright 17 mounted on a slide reciprocated in a guide 19 by a cam. The member 21 is mounted on two rods 22 slidable in bushings in the upright 17 and frame 1, the rods being connected by a cross-head 25 carrying a stop-lever 27 and a pivoted cam 29, which is connected by a roll 30 to the upright 17. When the upright 17 is moved forwards by its cam, the bar 21 comes against, or nearly against, the box and then stops, owing to the four bars 21 coming together to form a rectangular frame. The cam 29 then acts on a crosshead 32 slidable on the rods 22 and spring-connected to the cross-head 25, thus causing the member 21 to be pressed home, the lever 27 falling into engagement with a bar 28 so as to lock the member 21 against the box. The upright 17 continues its movement, and the rollers 7, 8 effect the turning-in of the covering-band. On the return of the rollers, the member 21 is not released until the cam 29 acts on the pendent arm of the lever 27. The upright 17 has a projection of semiwedge cross-section engaging a slot in its slide, the slot being undercut at one side and containing, at the other side, two wedges, one of which is movable laterally but not longitudinally, while the other is hooked and connected by a screw with the slide to move it inwards and hold the slide in adjusted position.
Patent GB-143368-A (GB)
Title: Improvements in and connected with lawn-mowers
IPC: A01D57/01
Filed: 1919-04-26
Abstract: 143,368. Halliday, R. T. April 26, 1919. Lawn-mowers.-A lawn-mower carries on its fore-part a bar A of steel, malleable cast iron, &c. which is provided along its lower edge with serrations or saw-cuts. The bar is adjustably and detachably secured to the mower by upwardly-extending slotted arms B. The serrated edge of the bar lifts the grass, thus facilitating the cut. The device may also he used for levelling purposes when sand is spread on the ground.
Patent GB-1024251-A (GB)
Title: Improvements in or relating to document reading
Inventor: AZAR YORAM
IPC: G06K7/10
Filed: 1961-03-22
Abstract: 1,024,251. Sensing records. ENGLISH ELECTRIC - LEO - MARCONI COMPUTERS Ltd. March 22, 1962 [March 22, 1961], No. 10431/61. Heading G4M. Marks on a record, e.g. an order form, are sensed by photo-cells 33, 34 at the end of light guides 31, 32, the photo-cells receiving light from lamp 27 which is diffusely reflected by the record. In another embodiment a single photocell directly above the sensing position is used, and a pair of lamps, one on each side of the sensing position, illuminate the record. The arrangement reduces the risk of false readings caused by creases. The photo-cell or cells may be connected in a circuit having two threshold levels. If the output is greater than the higher level, an acceptable mark is indicated. If the output is below the lower level, the mark is ignored. If the output is between the levels the mark is considered doubtful and the machine is stopped so that the record can be examined and compared with data stored in a register after being read. The data may be punched on a tape. The order form has row designating marks and also a test mark at one end to enable a check on the correct functioning of all photo-cells to be made.
Patent GB-1091988-A (GB)
Title: Improvements in roller conveyors
IPC: B65G13/00
Filed: 1966-03-10
Abstract: 1,091,988. Roller conveyers. ELECTROLUX A.B. March 10, 1966 [March 15, 1965], No. 10559/66. Heading B8A. A roller conveyer comprises a main path 12, Fig. 1, and a side-path 13, rollers 1 ... 11 of the main path adjacent the side path being angularly adjustable by movement laterally of the main path from positions H<SP>1</SP> ... H<SP>11</SP> to positions S<SP>1</SP> ... S<SP>11</SP> and by pivoting movement to the positions shown chain dotted. The rollers 1 ... 11 are supported by displaceably mounted brackets (15), Fig. 2 (not shown), the brackets adjacent the side path having depending bolts (17<SP>1</SP> ... 17<SP>11</SP>), some of which have extension portions (221, 22<SP>2</SP>, 22<SP>10</SP>, 22<SP>11</SP>), for engagement by respective pairs of members (23<SP>1</SP> ... 23<SP>11a</SP>) on abar (16) which is displaceable longitudinally of the main path. The clearances between the pairs of members (23<SP>1</SP> ... 23<SP>11a</SP>) are different from each other to give the correct pivoting movement to the rollers. The rollers 1 ... 6 have two independently rotatable parts 26<SP>1-6</SP> and 27<SP>1-6</SP>. The members (23<SP>1</SP> ... 23<SP>11a</SP>) may be adjustably locked on the bar (16). Extra rollers, e.g. roller 31, may be provided.
Patent GB-733688-A (GB)
Title: A new or improved weather sealing means for ventilating windows and the like on vehicles
Inventor: BOSTOCK CECIL WILLIAM
IPC: B60J10/04
Filed: 1952-04-26
Abstract: 733,688. Draught excluders. GLASS SEALER CO., Ltd. April 27, 1953 [April 26, 1952], No. 10565/52. Class 20 (3). A weather sealing strip for a ventilating window panel 10 of a vehicle which is centrally pivoted on a pair of vertical pivots comprises a base 20 mounted in an outwardly directed channel in the frame 11 of the panel 10 and having an outwardly projecting head 21 of triangular cross-section with concave side faces 23 which is joined to the base by a thin neck 22 so that the head can flex to either side of its normal central position and make a seal from either side with a rib 26 on the fixed frame 14 of the window opening. The apex of the head 21 is in the central plane of the member when the window panel is open. On closing the window one of the concave surfaces 23 of the head 21, engages the rib 26 which has the same radius of curvature as surfaces 23, and rocks over until the corner remote from the rib-engaging face contacts the base 20, the head 21 being rocked in opposite directions on the two sides of the panel pivots. The base 20 may have lips 25 fitting over the outside of the frame channel.
Patent GB-350914-A (GB)
Title: Improvements in and connected with air compressors
IPC: F04B3/00
Filed: 1930-03-03
Abstract: 350,914. Air compressors. STONE & CO., Ltd., J., Deptford, and DARKER, A. H., 1A, Cockspur Street, both in London. March 3, 1930, No. 10608/31. Divided on 350,929. [Class 8 (i).] Controlling compression.-The compression space of the cylinder is bounded by an abutment piston 33 coupled to a regulator piston 42, the opposite sides of which are respectively subject to the delivery pressure and to a spring 44 so that excessive delivery pressure draws the abutment piston back and increases the clearance. The spring is adjustable by a screw 47 acting on its abutment 45. Air is drawn in through a chamber 53 having a gauze cover and containing felt or other filtering material, and delivered to a chamber 49 from which a pipe 16 delivers to water-raising or other apparatus to be served while a passage 48 leads to a face of the piston 42. The rear end of the compressor cylinder is connected with the inlet chamber 53 by a breather passage 56 containing an oil plug 57 ; it may also commmunicate through ports with a lubricant chamber 58. The compressor piston rod is enclosed in a leather bellows 60. The rod is driven from an eccentric 1 on a vehicle axle through links 5<1>, 11 connected to the rod and sup. ported by a swinging link 13 from the undercarriage. Specification 350,929 is referred to.
Patent GB-150765-A (GB)
Title: An improved material for electric brushes
IPC: H01R43/12
Filed: 1919-04-29
Abstract: 150,765. White, A. E., (Becker Bros.). April 29, 1919. Drawings to Specification. Alloys; dry processes of extracting metals and alloys.-In making brushes suitable for dynamos, a metallic oxide or mixture of oxides is prepared electrolytically, mixed with carbon, and reduced by heating in hydrogen or coal gas, so as to form a mass of carbon and finely-divided annealed metal or alloy. Graphite or amorphous carbon may be used. Preferably the oxide is mixed in a wet condition with the carbon.
Patent GB-708879-A (GB)
Title: Pharmaceutical preparations containing oxytetracycline
IPC: A61K31/65
Filed: 1952-04-28
Abstract: A mixture of the antibiotic oxytetracycline and the antibiotic bacitracin is used in pharmaceutical preparations for internal or external administration.  It is preferred to use the antibiotics in proportions equivalent to 10-80 parts by weight of oxytetracycline hydrochloride and 90-10 parts by weight of bacitracin sulphate.  For general use 50-50 mixtures are preferred.  The antibiotics may be in the form of the free base or a therapeutically effective salt.  The mixtures may be incorporated in elizirs, tablets or capsules for oral use; in suitable vehicles for injection; in salves, ointments, dusting powders or solutions for local application.  Specification 684,417, [Group IV(b)], is referred to.
Patent GB-716656-A (GB)
Title: Improvements in or relating to ten-key adding machines
IPC: G06C7/10
Filed: 1952-04-28
Abstract: 716,656. Calculating-apparatus. BRUNSVIGA MASCHINENWERKE AKT.-GES. April 28, 1952 [May 23, 1951], No. 10672/52. Class 106 (1) A ten-key adding machine has a pin carriage a to which is secured a comb-shaped plate b the teeth of which normally lock the differential actuators of higher orders than those co-operating with the pins of the pin carriage but free the actuators for total-reading purposes when the carriage is shifted half a step. The pins are so spaced that when the carriage is so shifted, they do not obstruct the actuators. An amount set on the pin carriage may thus be preserved, so that it is possible to read an intermediate total during a division process.
Patent GB-568347-A (GB)
Title: Improvements in or relating to hydraulic shock absorbers
IPC: F16F9/19
Filed: 1942-07-30
Abstract: 568,347. Shock - absorbers. HOUDAILLE-HERSHEY CORPORATION. July 30, 1942, No. 10688. Convention date, April 10. [Class 108 (iii)] Relates to a hydraulic, piston-and - cylinder shockabsorber having valve means for controlling the flow of liquid on relative movement of the parts, liquid displaced by entry of the piston P into the cylinder 10 being forced into a chamber 40 containing a compensating member 44 such as a rubber or like container filled with compressed air or gas, which contracts and expands in accordance with the movement of the piston. According to the invention, the valve means is operable in accordance with the pressure in the cylinder. As shown, the valve means is carried in the piston and on slow shortening of the shock-absorber, against the action of a spring 35, liquid flows through a restricting orifice 33, in a spring- pressed slide-valve 31, and passages 37 to the chamber 40. On quick movement of the piston into the cylinder the pressure forces a spring- pressed valve 23 from its seat and liquid flows through peripheral passages 27 and the passages 37 into the chamber 40. When the pressure is released the spring 35 extends the shockabsorber, the liquid pressure moving the slide-valve 31 to allow free flow. The shock-absorber is secured in position by an eye 18 on the end of the piston-rod and holes 12 in the end of the cylinder.
Patent GB-1184095-A (GB)
Title: Improvements in or relating to the Manufacture of Core-Boxes for Foundry Work
IPC: B22C7/06
Filed: 1967-03-07
Abstract: 1,184,095. Making core-boxes; casting composite articles. CHELTON (FORMING) Ltd. and I. C. G. BERRY. 31 May, 1968 [7 March, 1967], No. 10720/67. Headings B3A and B3F. A core box 7 with a steel face 6, Fig. lh, is formed by spraying metal 3, Fig. 1d, on to a master 1 coated with a release agent 2, reinforcing the sprayed metal 3 with a castable material 4, removing the master 1 and coating the metal surface 3 with a release agent 5 and steel 6, applying a backing 7 to the steel 6 and finally removing the reinforced sprayed metal member 3, 4 to leave the steel shell 6 with its backing 7. In the embodiment described, a metal layer 3 of zinc, aluminium or lead-tin alloy is sprayed on to a wood, plastics or metal master 1 and the metal 3 reinforced by plaster 4. After removing the master 1 and coating the metal surface 3 with the release agent 5, a high carbon, chromium steel layer 6 of 0À050 inches thickness is sprayed on to the reinforced metal member 3, 4. A tinned copper layer is applied to the steel 6 and a zinc alloy backing 7 cast therearound. Alternatively, the reinforced metal member 3, 4 is covered by wax having a thickness of the steel 6 to be applied. A female plaster replica is taken from this form and is used to make a sand core, which is used to cast a female backing element 7 of aluminium or cast iron. After removing the wax from the reinforced metal member 3, 4, it is sprayed with steel to form the steel surface 6 which is resin-bonded to the cast backing 7. The backing 7 may be of copper.